CLOAKING OF RADIO SIGNALS
    3.
    发明申请
    CLOAKING OF RADIO SIGNALS 审中-公开
    无线电信号的克隆

    公开(公告)号:US20100166180A1

    公开(公告)日:2010-07-01

    申请号:US12346231

    申请日:2008-12-30

    IPC分类号: H04K1/02

    摘要: The present invention comprises a device that, based upon signals transmitted by devices within a wireless network, causes masking signals to be selectively transmitted. For example, the device may not cause masking signals to be transmitted if the signal does not include confidential data, for example it is an acknowledgement message. Additionally, the strength, coding rate and modulation format of the masking signals may be varied to provide increased data security.

    摘要翻译: 本发明包括基于由无线网络内的设备发送的信号使得屏蔽信号被选择性地发送的设备。 例如,如果信号不包括机密数据,则该装置可能不会导致屏蔽信号被发送,例如它是确认消息。 此外,屏蔽信号的强度,编码率和调制格式可以改变以提供增加的数据安全性。

    Optimisation of transmission parameters of access points in wireless networks
    4.
    发明授权
    Optimisation of transmission parameters of access points in wireless networks 有权
    无线网络接入点传输参数优化

    公开(公告)号:US08125917B2

    公开(公告)日:2012-02-28

    申请号:US12249077

    申请日:2008-10-10

    IPC分类号: H04L12/26

    CPC分类号: H04W24/02 H04W16/18

    摘要: In a wireless network comprising access points deployed within a designated zone of coverage, the radio frequency field strength resulting from radiation from the access points is optimised as a function of location by means of control of the transmission power and/or radiation pattern of the access points in response to measurements from sensors at defined locations that measure received signal power, the received power being related to radio frequency field strength. Sensors may be deployed within the designated zone of coverage, at the edge of the zone and/or outside the zone and optimization of the transmission parameters of the access points in terms of transmission power and/or radiation pattern is carried out taking into account the location of the sensors in addition to the received power at the sensors.

    摘要翻译: 在包括部署在指定的覆盖区域内的接入点的无线网络中,由来自接入点的辐射产生的射频场强度通过对接入点的发射功率和/或辐射模式的控制而被优化为位置的函数 响应于在测量接收信号功率的限定位置处的传感器的测量点,所接收的功率与射频场强有关。 传感器可以部署在指定的覆盖区域内,在区域的边缘和/或区域外,并且在传输功率和/或辐射模式方面优化接入点的传输参数是考虑到 传感器的位置以及传感器的接收功率。

    TDOA based positioning with calculation of correction factors for compensating the clock offsets of unsynchronized network stations
    5.
    发明授权
    TDOA based positioning with calculation of correction factors for compensating the clock offsets of unsynchronized network stations 有权
    基于TDOA的定位,计算用于补偿不同步网络站的时钟偏移的校正因子

    公开(公告)号:US08818406B2

    公开(公告)日:2014-08-26

    申请号:US13513875

    申请日:2010-01-22

    IPC分类号: H04W24/00 H04M3/42

    摘要: The present invention presents a method, arrangement and computer program product for clocking exploiting the relative behavior of clocks of individual receiving stations as well as a corresponding modeling to derive a time difference of arrival of a signal from a user device which can be used to correct the time difference of arrival based on the modeled clock behavior and leads to a correct clocking of received user signals without the need of synchronization of the clocks in the various receiving stations. This principle is applicable to a plurality of pairs of receiving stations and beacon signals transmitted amongst them and allows for a correct location estimation of a user device.

    摘要翻译: 本发明提出了一种用于利用各个接收站的时钟的相对行为进行时钟的方法,配置和计算机程序产品以及相应的建模,以导出来自可用于校正的用户设备的信号的到达时间差 基于建模的时钟行为的到达时间差,并且导致接收到的用户信号的正确时钟,而不需要在各种接收站中同步时钟。 该原理适用于在它们之间传输的多对接收站和信标信号,并允许用户设备的正确的位置估计。

    COVERAGE OPTIMISATION FOR WIRELESS NETWORKS
    6.
    发明申请
    COVERAGE OPTIMISATION FOR WIRELESS NETWORKS 有权
    无线网络覆盖优化

    公开(公告)号:US20100091745A1

    公开(公告)日:2010-04-15

    申请号:US12249077

    申请日:2008-10-10

    IPC分类号: H04W4/00 H04W84/12

    CPC分类号: H04W24/02 H04W16/18

    摘要: In a wireless network comprising access points deployed within a designated zone of coverage, the radio frequency field strength resulting from radiation from the access points is optimised as a function of location by means of control of the transmission power and/or radiation pattern of the access points in response to measurements from sensors at defined locations that measure received signal power, the received power being related to radio frequency field strength. Sensors may be deployed within the designated zone of coverage, at the edge of the zone and/or outside the zone and optimisation of the transmission parameters of the access points in terms of transmission power and/or radiation pattern is carried out taking into account the location of the sensors in addition to the received power at the sensors.

    摘要翻译: 在包括部署在指定的覆盖区域内的接入点的无线网络中,由来自接入点的辐射产生的射频场强度通过对接入点的发射功率和/或辐射模式的控制而被优化为位置的函数 响应于在测量接收信号功率的限定位置处的传感器的测量点,所接收的功率与射频场强有关。 传感器可以部署在指定的覆盖区域内,在区域的边缘和/或区域外,并且在传输功率和/或辐射模式方面优化接入点的传输参数是考虑到 传感器的位置以及传感器的接收功率。

    TDOA BASED POSITIONING WITH CALCULATION OF CORRECTION FACTORS FOR COMPENSATING THE CLOCK OFFSETS OF UNSYNCHRONIZED NETWORK STATIONS
    7.
    发明申请
    TDOA BASED POSITIONING WITH CALCULATION OF CORRECTION FACTORS FOR COMPENSATING THE CLOCK OFFSETS OF UNSYNCHRONIZED NETWORK STATIONS 有权
    用于补偿不间断网络站的时钟偏差的校正因子的TDOA基于定位

    公开(公告)号:US20130137452A1

    公开(公告)日:2013-05-30

    申请号:US13513875

    申请日:2010-01-22

    IPC分类号: H04W64/00 H04W24/08

    摘要: The present invention presents a method, arrangement and computer program product for clocking exploiting the relative behavior of clocks of individual receiving stations as well as a corresponding modeling to derive a time difference of arrival of a signal from a user device which can be used to correct the time difference of arrival based on the modeled clock behavior and leads to a correct clocking of received user signals without the need of synchronization of the clocks in the various receiving stations. This principle is applicable to a plurality of pairs of receiving stations and beacon signals transmitted amongst them and allows for a correct location estimation of a user device.

    摘要翻译: 本发明提出了一种用于利用各个接收站的时钟的相对行为进行时钟的方法,配置和计算机程序产品以及相应的建模,以导出来自可用于校正的用户设备的信号的到达时间差 基于建模的时钟行为的到达时间差,并且导致接收到的用户信号的正确时钟,而不需要在各种接收站中同步时钟。 该原理适用于在它们之间传输的多对接收站和信标信号,并允许用户设备的正确的位置估计。

    Antennae System
    8.
    发明申请
    Antennae System 有权
    天线系统

    公开(公告)号:US20110223925A1

    公开(公告)日:2011-09-15

    申请号:US13116084

    申请日:2011-05-26

    IPC分类号: H04W88/08 H04W72/04

    摘要: Embodiments of the invention relate to wireless communications networks, and more specifically to an antenna apparatus for cellular wireless systems. Increasing data capacity of cellular wireless systems places increasing demands on the capacity of the two way connection, known as backhaul, between a cellular base station and a telecommunications network such as the PSTN backhaul, since this is the connection that has to convey the wireless-originating traffic to its destination, often in an entirely different network. Known backhaul links include leased lines, microwave links, optical fibre links or radio resources for relaying backhaul traffic between base stations. The fixed line solutions are expensive to implement and maintain, while the radio solutions antenna configurations that are not ideal for relaying data between base stations. In embodiments of the invention, communication between base stations occurs in a first timeslot by use of a first antenna system and communication between a given base station and a user equipment occurs in a second timeslot using a second antenna system. The benefit of this method is that the first antenna system can be optimised for use in communication between base stations, whereas the second antenna system can be optimised for communication with user equipment which preferably occurs within the area of cellular wireless coverage of the sector served by the second antenna system.

    摘要翻译: 本发明的实施例涉及无线通信网络,更具体地涉及蜂窝无线系统的天线装置。 蜂窝无线系统的数据容量的增加对于诸如PSTN回程的蜂窝基站和电信网络之间的双向连接(称为回程)的容量的需求增加,因为这是必须传送无线 - 将流量发送到目的地,通常在完全不同的网络中。 已知的回程链路包括专线,微波链路,光纤链路或无线电资源,用于在基站之间中继回程业务。 固定线路解决方案实施和维护成本高昂,而无线电解决方案天线配置不适合在基站之间中继数据。 在本发明的实施例中,基站之间的通信通过使用第一天线系统在第一时隙中发生,并且给定基站与用户设备之间的通信使用第二天线系统在第二时隙中发生。 该方法的优点是可以优化第一天线系统以用于基站之间的通信,而第二天线系统可以优化用于与用户设备的通信,优选地在由所服务的扇区的蜂窝无线覆盖的区域内 第二天线系统。

    Antenna Diversity
    9.
    发明申请
    Antenna Diversity 有权
    天线多样性

    公开(公告)号:US20110317625A1

    公开(公告)日:2011-12-29

    申请号:US13220060

    申请日:2011-08-29

    IPC分类号: H04W4/00

    CPC分类号: H04W16/10 H04W16/28 H04W40/02

    摘要: The invention is directed to a method of communicating between a first node including a plurality of antennas and a second node, the method comprising the steps of: transmitting a signal from the first node to said second node using each of the plurality of antennas of the first node; at the second node, selecting one of the plurality of antennas for use; and communicating between the two nodes using this selected antenna. The invention is also directed to apparatus and software for performing the methods.

    摘要翻译: 本发明涉及一种在包括多个天线的第一节点和第二节点之间进行通信的方法,所述方法包括以下步骤:使用所述第一节点的所述多个天线中的每一个将所述第一节点的信号发送到所述第二节点 第一节点 在所述第二节点处,选择所述多个天线中的一个使用; 并使用该选择的天线在两个节点之间进行通信。 本发明还涉及用于执行这些方法的装置和软件。

    Multi-beam cellular communication system
    10.
    发明授权
    Multi-beam cellular communication system 有权
    多波束蜂窝通信系统

    公开(公告)号:US07826471B2

    公开(公告)日:2010-11-02

    申请号:US10385792

    申请日:2003-03-11

    IPC分类号: H04B7/212

    摘要: A cellular communication system comprising a plurality of geographically spaced base stations (2) each of which comprises an antenna arrangement (4, 6, 8) per base station sector, each of which antenna arrangements has an antenna element for generating an array of narrow beams (10, 12, 14) covering the sector. Timeslots are simultaneously transmitted over each of the beams so as to generate successive sets of simultaneously transmitted timeslots per sector. The timeslots are each split into multiple orthogonal codes, for example Walsh codes. The communication system additionally comprising a scheduling device (31) for allocating for successive sets of timeslots common overhead channels, including a common pilot channel, which are allocated to the same sub-set of codes of each timeslot in the set. For successive sets of timeslots different data traffic is allocated to the same sub-set of codes of each timeslot in the set. This effectively generates a sector wide antenna beam carrying the common overhead channels and a plurality of narrow beams each of which carry different data traffic. Inter-beam interference is addressed by the application of Adaptive Modulation and Coding and by an inter-beam handoff scheme. The handoff scheme ensures that when an end user equipment is located in a cusp region between adjacent beams the antenna arrangement simultaneously transmits data traffic to that mobile station on at least both of the adjacent beams.

    摘要翻译: 一种蜂窝通信系统,包括多个地理上隔开的基站(2),每个基站包括每个基站扇区的天线装置(4,6,8),其中每一个天线装置具有用于产生窄波束阵列的天线元件 (10,12,14)。 每个波束同时发射时隙,以便每扇区产生连续的同时传输的时隙。 时隙分为多个正交码,例如沃尔什码。 所述通信系统还包括调度设备(31),用于分配连续的时隙集合,包括公共导频信道,所述公共开销信道被分配给所述组中每个时隙的相同子集。 对于连续的时隙集合,不同的数据业务被分配给集合中每个时隙的相同子集的代码。 这有效地产生承载公共开销信道的扇区宽天线波束和各自携带不同数据业务的多个窄波束。 通过应用自适应调制和编码以及通过波束间切换方案来解决波束间干扰。 切换方案确保当最终用户设备位于相邻波束之间的尖端区域时,天线装置在至少两个相邻波束上同时向该移动台发送数据业务。